sharding

- [ ] I have searched the [issues](https://github.com/codingapi/tx-lcn/issues) of this repository and believe that this is not a duplicate.

### 1. Bug Description

### 2. Environment:
- JDK version:
- OS:
- TX-LCN version:
- Others:

### 3. Exception Stacktrace

```
Paste your Exception Stacktrace here!
```

### 4. Tour Idea

The issue contains only the title “sharding” and an otherwise empty bug-report template; no file, test, entry point, reproduction, or expected behavior is provided. Start by supplying the missing environment and stack trace details, then identify the affected sharding code and a concrete completion criterion.

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